The initial mass of a rocket is 1000   kg . Calculate at what rate the fuel should be burnt so that the…

The initial mass of a rocket is $1000 \mathrm{kg}$. Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of, $20{ \mathrm{m} \mathrm{s}}^{-2}$. The gases come out at a relative speed of $500{ \mathrm{m} \mathrm{s}}^{-1}$, with respect to the rocket:

$\left[\text{Use} g=10 \mathrm{m} {\mathrm{s}}^{-2}\right]$